KitchenAid Blocked Defrost Drain Causing Internal Water Overflow

Water leaking inside the refrigerator or under crisper drawers.

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Possible Causes

Clogged or frozen defrost drain, Debris in drain trough, Misaligned drain tube at rear, Ice blocking drain outlet

How to Fix / Troubleshooting

Safety first: Unplug the refrigerator before removing interior panels. Use towels to absorb water.

Steps to resolve:

  • Remove drawers: Take out crisper drawers and shelves to access the rear interior wall.
  • Locate drain trough: At the bottom of the rear panel, look for a trough or small drain hole where water should flow.
  • Clear blockage: Use a turkey baster with warm water to flush the drain hole repeatedly until water flows freely. Avoid using sharp objects that can puncture the drain.
  • Check rear drain tube: From the back of the refrigerator (with rear panel removed), ensure the drain tube is properly attached to the drain pan and not kinked.

Once the drain is clear, reassemble and monitor for recurrence. If the drain repeatedly freezes, a drain heater kit or further adjustment may be needed by a technician.

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Repair Difficulty

Easy 2/5

Required Part

Defrost Drain Tube
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